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More people die of tuberculosis than of any other disease caused by asingle agent. This has probably been the case in quite a while. During the 1._______early stages of the industrial revolution, perhaps one in every seventh 2._______deaths in Europe’s crowded cities were caused by the disease. From 3._______now on, though, western eyes, missing the global picture, saw the trouble 4._______going into decline. With occasional breaks for war, the rates of death andinfection in the Europe and America dropped steadily through the 19th and 5._______20th centuries. In the 1950s, the introduction of antibiotics strengthened thetrend in rich countries, and the antibiotics were allowed to be imported to 6._______poor countries. Medical researchers declared victory and withdrew. They are wrong. In the mid-1980s the frequency of infections and deaths 7._______started to pick up again around the world. Where tuberculosis vanished, it came 8._______back; in many places where it had never been away, it grew better. The World 9._______Health Organization estimates that 1.7 billion people (a third of the earth’spopulation) suffer from tuberculosis. Even when the infection rate was falling,population growth kept the number of clinical cases more or less constantly at 8 10._______million a year. Around 3 million of those people died, nearly all of them in poorcountries.
操作表示机显示器出现局部偏色的原因是什么?如何排除?
TFDS-2系统ZR1#2#磁钢不能使用后,可以用来做3#4#号磁钢。
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直流电动机中电枢的主要作用是()。
建筑绝热用硬质聚氨酯泡沫塑料Ⅲ类产品的高温尺寸稳定性长、宽、高均不应大于()。
炸药在()作用下发生爆轰的难易程度,叫炸药的敏感度。
男性,57岁,高血压史5年,因紧张、劳累,出现头痛、眩晕、恶心、呕吐、烦躁、心悸、面色苍白、视力模糊,测血压为260/130mmHg,心率120次/分。经治疗血压降至180/105mmHg,两次测得血钾2.5~2.6mmol/L,此时进行何种检查最为适宜()
根据UC3842的典型应用电路,分析以下六个问题: 该开关电源是什么拓扑结构?
上腹部疼痛同时有咽喉部及胸骨后疼痛的急性胃炎是()
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